Hi, so this is my creation, I am attaching some fotos, especially the back and front of the knife edge with the LED turned on. The 8" blank is almost on its way from Germany, I guess I will start grinding in August. Won't be using the tester untill polishing. I hope I designed the tester correctly and that the LED is properly cut and diffused.
22" f/3.61 David Lukehurst Ultra-Portable Dobsonian, mirror set by John Nichol
Nagler 26 mm, Ethos 13 mm, Ethos 8 mm, Nagler 3.5 mm
TV Paracorr
Lumicon 2" UHC, Lumicon 1.25" H-Beta, Orion 2" ND 13% transm.
Unihedron - SQM-L
Canon EOS 350d
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